// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "cc/debug/frame_viewer_instrumentation.h"

#include "cc/debug/traced_value.h"

namespace cc {
namespace frame_viewer_instrumentation {

    const char kCategoryLayerTree[] = TRACE_DISABLED_BY_DEFAULT("cc.debug") "," TRACE_DISABLED_BY_DEFAULT("cc.debug.quads") "," TRACE_DISABLED_BY_DEFAULT("devtools.timeline.layers");

    namespace {

        const char kCategory[] = "cc," TRACE_DISABLED_BY_DEFAULT("devtools.timeline");
        const char kTileData[] = "tileData";
        const char kLayerId[] = "layerId";
        const char kTileId[] = "tileId";
        const char kTileResolution[] = "tileResolution";
        const char kSourceFrameNumber[] = "sourceFrameNumber";

        const char kAnalyzeTask[] = "AnalyzeTask";
        const char kRasterTask[] = "RasterTask";

        std::unique_ptr<base::trace_event::ConvertableToTraceFormat> TileDataAsValue(
            const void* tile_id,
            TileResolution tile_resolution,
            int source_frame_number,
            int layer_id)
        {
            std::unique_ptr<base::trace_event::TracedValue> res(
                new base::trace_event::TracedValue());
            TracedValue::SetIDRef(tile_id, res.get(), kTileId);
            res->SetString(kTileResolution, TileResolutionToString(tile_resolution));
            res->SetInteger(kSourceFrameNumber, source_frame_number);
            res->SetInteger(kLayerId, layer_id);
            return std::move(res);
        }

    } // namespace

    ScopedAnalyzeTask::ScopedAnalyzeTask(const void* tile_id,
        TileResolution tile_resolution,
        int source_frame_number,
        int layer_id)
    {
        TRACE_EVENT_BEGIN1(
            kCategory, kAnalyzeTask, kTileData,
            TileDataAsValue(tile_id, tile_resolution, source_frame_number, layer_id));
    }

    ScopedAnalyzeTask::~ScopedAnalyzeTask()
    {
        TRACE_EVENT_END0(kCategory, kAnalyzeTask);
    }

    ScopedRasterTask::ScopedRasterTask(const void* tile_id,
        TileResolution tile_resolution,
        int source_frame_number,
        int layer_id)
    {
        TRACE_EVENT_BEGIN1(
            kCategory, kRasterTask, kTileData,
            TileDataAsValue(tile_id, tile_resolution, source_frame_number, layer_id));
    }

    ScopedRasterTask::~ScopedRasterTask()
    {
        TRACE_EVENT_END0(kCategory, kRasterTask);
    }

    bool IsTracingLayerTreeSnapshots()
    {
        bool category_enabled;
        TRACE_EVENT_CATEGORY_GROUP_ENABLED(kCategoryLayerTree, &category_enabled);
        return category_enabled;
    }

} // namespace frame_viewer_instrumentation
} // namespace cc
